RE: [CAD_CAM_EDM_DRO] Re:Home Switches

--- In CAD_CAM_EDM_DRO@yahoogroups.com, "Dave Fisher" <dave@d...>
wrote:

> On fitting home switches to our router table, I notice that each

time I home the table - the X and Y readings differ greatly, some times
upto + - > 0.5 mm. Seldom never going to zero. Slowing the home traverse
speed
seems to make little difference.

1) use an indicator and check for lost steps. If you are off by this
much there may be a problem with the stepper adjustments.

2) Double check that the stop and switch are mounted "FIRMLY". Any
looseness will show as a moving home position

3) Most systems that I have looked at will repeat very reasonably if
the same speeds and direction are used.

What are you using for an actuator? A perpendicular face, or a ramp?

Fred Smith - IMService

The table is driven by servo motors from a Deskcnc setup. The levers of the
micro switches
are at right angles to the edges of the table and firmly mounted.

Dave Fisher






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